Jim, I suppose I really don't know what you mean by 'lack of color'.
I'm seeing the bright, radiant (yet, subdued) colors that one might see in the high ground, mid-day summer sunshine; in the context that this is a work camp scene. Don't confuse the words 'bright' and 'radiant' with what one would expect from a kaleidoscope of colorful flowers.
I know from reading your thread, that you use a photo layering program. That's probably why there is some foreground fuzziness in the previous photo (loco roof edge). Both of these photos are near perfection, though, in my humble opinion. Well done, I say!
Bye the way, I saw the dog laying there on my first scan of the photo. But, I was looking for him without other distraction.